Inner Diameter: 35mm / 1.4"; Thickness: 3mm / 0.12"Material: Zinc Alloy materials, work fine, smooth without interface. Work great for many function O-rings.Features: O ring buckle is both component and ornament for shoes, handbags, luggage straps.Applications: O-rings are suitable for making belts, clothes, luggage belts and backpacks.Advantages: Sturdy, good for DIY purposes. Package Included: 4 x O-Rings BucklesDescriptions:1.Material: Zinc Alloy materials, work fine, smooth without interface. Work great for many function O-rings.2.Features: O ring buckle is both component and ornament for shoes, handbags, luggage straps.3.Applications: O-rings are suitable for making belts, clothes, luggage belts and backpacks.Specifications:Inner Diameter: 35mm / 1.4"Thickness: 3mm / 0.12"Material: Zinc Alloy; Color: Silver ToneFinish: ElectroplatedPackage Included: 4 x O-rings